Question

If the length, breadth and height of a cuboid are 8 cm, 3 cm and 4 cm respectively, then the total surface area of the cuboid is

• A. 48 cm²
• B. 72 cm²
• C. 136 cm²
• D. 108 cm²

Answer 1

The Correct Option is C

The total surface area of a cuboid with length $l$, breadth $b$, and height $h$ is given by the formula: $$ TSA = 2(lb + bh + hl) $$ Given the length $l = 8$ cm, breadth $b = 3$ cm, and height $h = 4$ cm, we can substitute these values into the formula: $$ TSA = 2((8)(3) + (3)(4) + (4)(8)) $$ $$ TSA = 2(24 + 12 + 32) $$ $$ TSA = 2(68) $$ $$ TSA = 136 $$ So, the total surface area of the cuboid is 136 cm$^2$.